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<template>
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<view class="w-picker-view">
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<picker-view class="d-picker-view" :indicator-style="itemHeight" :value="pickVal" @change="handlerChange">
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.years" :key="index">{{item}}年</view>
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</picker-view-column>
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.months" :key="index">{{item}}月</view>
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</picker-view-column>
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.days" :key="index">{{item}}日</view>
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</picker-view-column>
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<picker-view-column>
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<view class="w-picker-item" v-for="(item,index) in range.sections" :key="index">{{item}}</view>
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</picker-view-column>
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</picker-view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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pickVal:[],
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range:{},
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checkObj:{}
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};
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},
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props:{
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itemHeight:{
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type:String,
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default:"44px"
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},
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startYear:{
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type:String,
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default:""
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},
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endYear:{
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type:String,
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default:""
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},
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value:{
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type:[String,Array,Number],
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default:""
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},
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current:{//是否默认选中当前日期
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type:Boolean,
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default:false
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},
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disabledAfter:{//是否禁用当前之后的日期
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type:Boolean,
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default:false
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}
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},
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watch:{
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value(val){
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this.initData();
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}
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},
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created() {
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this.initData();
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},
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methods:{
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formatNum(n){
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return (Number(n)<10?'0'+Number(n):Number(n)+'');
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},
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checkValue(value){
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let strReg=/^\d{4}-\d{2}-\d{2} [\u4e00-\u9fa5]{2}$/,example;
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if(!strReg.test(value)){
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console.log(new Error("请传入与mode、fields匹配的value值，例value="+example+""))
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}
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return strReg.test(value);
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},
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resetData(year,month,day){
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let curDate=this.getCurrenDate();
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let curFlag=this.current;
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let curYear=curDate.curYear;
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let curMonth=curDate.curMonth;
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let curDay=curDate.curDay;
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let curHour=curDate.curHour;
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let months=[],days=[],sections=[];
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let disabledAfter=this.disabledAfter;
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let monthsLen=disabledAfter?(year*1<curYear?12:curMonth):12;
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let totalDays=new Date(year,month,0).getDate();//计算当月有几天;
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let daysLen=disabledAfter?((year*1<curYear||month*1<curMonth)?totalDays:curDay):totalDays;
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let sectionFlag=disabledAfter?((year*1<curYear||month*1<curMonth||day*1<curDay)==true?false:true):(curHour>12==true?true:false);
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sections=["上午","下午"];
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for(let month=1;month<=monthsLen;month++){
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months.push(this.formatNum(month));
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};
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for(let day=1;day<=daysLen;day++){
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days.push(this.formatNum(day));
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}
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if(sectionFlag){
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sections=["上午"];
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}
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return{
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months,
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days,
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sections
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}
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},
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getData(dVal){
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//用来处理初始化数据
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let curFlag=this.current;
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let disabledAfter=this.disabledAfter;
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let curDate=this.getCurrenDate();
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let curYear=curDate.curYear;
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let curMonthdays=curDate.curMonthdays;
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let curMonth=curDate.curMonth;
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let curDay=curDate.curDay;
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let curHour=curDate.curHour;
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let defaultDate=this.getDefaultDate();
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let startYear=this.getStartDate().getFullYear();
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let endYear=this.getEndDate().getFullYear();
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let years=[],months=[],days=[],sections=[];
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let year=dVal[0]*1;
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let month=dVal[1]*1;
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let day=dVal[2]*1;
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let monthsLen=disabledAfter?(year<curYear?12:curDate.curMonth):12;
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let daysLen=disabledAfter?((year<curYear||month<curMonth)?defaultDate.defaultDays:curDay):(curFlag?curMonthdays:defaultDate.defaultDays);
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let sectionFlag=disabledAfter?((year*1<curYear||month*1<curMonth||day*1<curDay)==true?false:true):(curHour>12==true?true:false);
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for(let year=startYear;year<=(disabledAfter?curYear:endYear);year++){
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years.push(year.toString())
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}
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for(let month=1;month<=monthsLen;month++){
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months.push(this.formatNum(month));
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}
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for(let day=1;day<=daysLen;day++){
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days.push(this.formatNum(day));
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}
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if(sectionFlag){
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sections=["下午"];
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}else{
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sections=["上午","下午"];
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}
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return {
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years,
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months,
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days,
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sections
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}
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},
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getCurrenDate(){
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let curDate=new Date();
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let curYear=curDate.getFullYear();
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let curMonth=curDate.getMonth()+1;
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let curMonthdays=new Date(curYear,curMonth,0).getDate();
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let curDay=curDate.getDate();
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let curHour=curDate.getHours();
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let curSection="上午";
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if(curHour>=12){
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curSection="下午";
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}
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return{
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curDate,
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curYear,
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curMonth,
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curMonthdays,
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curDay,
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curHour,
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curSection
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}
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},
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getDefaultDate(){
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let value=this.value;
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let reg=/-/g;
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let defaultDate=value?new Date(value.split(" ")[0].replace(reg,"/")):new Date();
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let defaultYear=defaultDate.getFullYear();
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let defaultMonth=defaultDate.getMonth()+1;
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let defaultDay=defaultDate.getDate();
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let defaultDays=new Date(defaultYear,defaultMonth,0).getDate()*1;
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return{
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defaultDate,
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defaultYear,
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defaultMonth,
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defaultDay,
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defaultDays
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}
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},
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getStartDate(){
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let start=this.startYear;
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let startDate="";
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let reg=/-/g;
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if(start){
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startDate=new Date(start+"/01/01");
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}else{
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startDate=new Date("1970/01/01");
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}
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return startDate;
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},
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getEndDate(){
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let end=this.endYear;
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let reg=/-/g;
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let endDate="";
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if(end){
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endDate=new Date(end+"/12/31");
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}else{
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endDate=new Date();
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}
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return endDate;
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},
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getDval(){
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let value=this.value;
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let dVal=null;
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let aDate=new Date();
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let year=this.formatNum(aDate.getFullYear());
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let month=this.formatNum(aDate.getMonth()+1);
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let day=this.formatNum(aDate.getDate());
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let hour=aDate.getHours();
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let section="上午";
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if(hour>=12)section="下午";
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if(value){
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let flag=this.checkValue(value);
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if(!flag){
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dVal=[year,month,day,section]
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}else{
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let v=value.split(" ");
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dVal=[...v[0].split("-"),v[1]];
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}
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}else{
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dVal=[year,month,day,section]
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}
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return dVal;
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},
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initData(){
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let startDate,endDate,startYear,endYear,startMonth,endMonth,startDay,endDay;
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let years=[],months=[],days=[],sections=[];
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let dVal=[],pickVal=[];
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let value=this.value;
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let reg=/-/g;
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let range={};
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let result="",full="",year,month,day,section,obj={};
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let defaultDate=this.getDefaultDate();
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let defaultYear=defaultDate.defaultYear;
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let defaultMonth=defaultDate.defaultMonth;
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let defaultDay=defaultDate.defaultDay;
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let defaultDays=defaultDate.defaultDays;
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let curFlag=this.current;
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let disabledAfter=this.disabledAfter;
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let curDate=this.getCurrenDate();
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let curYear=curDate.curYear;
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let curMonth=curDate.curMonth;
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let curMonthdays=curDate.curMonthdays;
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let curDay=curDate.curDay;
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let curSection=curDate.curSection;
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let dateData=[];
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dVal=this.getDval();
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startDate=this.getStartDate();
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endDate=this.getEndDate();
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startYear=startDate.getFullYear();
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startMonth=startDate.getMonth();
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startDay=startDate.getDate();
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endYear=endDate.getFullYear();
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endMonth=endDate.getMonth();
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endDay=endDate.getDate();
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dateData=this.getData(dVal);
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years=dateData.years;
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months=dateData.months;
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days=dateData.days;
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sections=dateData.sections;
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pickVal=disabledAfter?[
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dVal[0]&&years.indexOf(dVal[0])!=-1?years.indexOf(dVal[0]):0,
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dVal[1]&&months.indexOf(dVal[1])!=-1?months.indexOf(dVal[1]):0,
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dVal[2]&&days.indexOf(dVal[2])!=-1?days.indexOf(dVal[2]):0,
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dVal[3]&§ions.indexOf(dVal[3])!=-1?sections.indexOf(dVal[3]):0
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]:(curFlag?[
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years.indexOf(curYear+''),
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months.indexOf(this.formatNum(curMonth)),
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days.indexOf(this.formatNum(curDay)),
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sections.indexOf(curSection),
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]:[
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dVal[0]&&years.indexOf(dVal[0])!=-1?years.indexOf(dVal[0]):0,
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dVal[1]&&months.indexOf(dVal[1])!=-1?months.indexOf(dVal[1]):0,
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dVal[2]&&days.indexOf(dVal[2])!=-1?days.indexOf(dVal[2]):0,
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dVal[3]&§ions.indexOf(dVal[3])!=-1?sections.indexOf(dVal[3]):0
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]);
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range={years,months,days,sections};
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year=dVal[0]?dVal[0]:years[0];
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month=dVal[1]?dVal[1]:months[0];
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day=dVal[2]?dVal[2]:days[0];
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section=dVal[3]?dVal[3]:sections[0];
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result=full=`${year+'-'+month+'-'+day+' '+section}`;
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obj={
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year,
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month,
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day,
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section
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}
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this.range=range;
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this.checkObj=obj;
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this.$nextTick(()=>{
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this.pickVal=pickVal;
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});
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this.$emit("change",{
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result:result,
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value:full,
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obj:obj
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})
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},
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handlerChange(e){
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let arr=[...e.detail.value];
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let data=this.range;
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let year="",month="",day="",section="";
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let result="",full="",obj={};
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let months=null,days=null,sections=null;
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let disabledAfter=this.disabledAfter;
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year=(arr[0]||arr[0]==0)?data.years[arr[0]]||data.years[data.years.length-1]:"";
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month=(arr[1]||arr[1]==0)?data.months[arr[1]]||data.months[data.months.length-1]:"";
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day=(arr[2]||arr[2]==0)?data.days[arr[2]]||data.days[data.days.length-1]:"";
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section=(arr[3]||arr[3]==0)?data.sections[arr[3]]||data.sections[data.sections.length-1]:"";
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result=full=`${year+'-'+month+'-'+day+' '+section}`;
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let resetData=this.resetData(year,month,day);
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if(this.disabledAfter){
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months=resetData.months;
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days=resetData.days;
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sections=resetData.sections;
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}else{
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if(year%4==0||(month!=this.checkObj.month)){
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days=resetData.days;
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}
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}
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if(months)this.range.months=months;
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if(days)this.range.days=days;
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if(sections)this.range.sections=sections;
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obj={
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year,
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month,
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day,
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section
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}
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this.checkObj=obj;
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this.$emit("change",{
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result:result,
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value:full,
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obj:obj
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})
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}
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}
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}
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</script>
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<style lang="scss">
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@import "./w-picker.css";
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</style>
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